./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0661b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0661b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb7f3afec9a7b0bf288c62eb95c6c2b13307d1b9b48696daca584c7566ec9aef --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:12:33,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:12:33,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:12:33,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:12:33,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:12:33,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:12:33,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:12:33,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:12:33,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:12:33,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:12:33,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:12:33,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:12:33,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:12:33,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:12:33,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:12:33,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:12:33,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:12:33,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:12:33,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:12:33,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:12:33,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:12:33,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:12:33,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:12:33,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:12:33,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:12:33,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:12:33,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:12:33,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:12:33,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:12:33,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:12:33,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:12:33,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:12:33,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:12:33,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:12:33,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:12:33,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:12:33,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:12:33,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:12:33,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:12:33,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:12:33,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:12:33,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:12:33,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:12:33,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:12:33,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:12:33,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:12:33,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:12:33,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:12:33,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:12:33,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:12:33,390 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:12:33,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:12:33,391 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:12:33,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:12:33,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:12:33,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:12:33,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:12:33,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:12:33,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:12:33,392 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:12:33,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:12:33,392 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:12:33,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:12:33,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:12:33,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:12:33,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:12:33,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:12:33,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:12:33,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:12:33,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:12:33,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:12:33,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:12:33,402 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:12:33,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:12:33,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:12:33,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb7f3afec9a7b0bf288c62eb95c6c2b13307d1b9b48696daca584c7566ec9aef [2022-10-17 10:12:33,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:12:33,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:12:33,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:12:33,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:12:33,666 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:12:33,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0661b.c [2022-10-17 10:12:33,733 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/data/36d5bb03d/0984296d504f44c08da5b6dce5f4df86/FLAG0e02be4c5 [2022-10-17 10:12:34,283 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:12:34,283 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c [2022-10-17 10:12:34,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/data/36d5bb03d/0984296d504f44c08da5b6dce5f4df86/FLAG0e02be4c5 [2022-10-17 10:12:34,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/data/36d5bb03d/0984296d504f44c08da5b6dce5f4df86 [2022-10-17 10:12:34,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:12:34,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:12:34,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:12:34,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:12:34,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:12:34,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:12:34" (1/1) ... [2022-10-17 10:12:34,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e86895f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:34, skipping insertion in model container [2022-10-17 10:12:34,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:12:34" (1/1) ... [2022-10-17 10:12:34,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:12:34,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:12:34,931 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c[5269,5282] [2022-10-17 10:12:34,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:12:34,942 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:12:34,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c[5269,5282] [2022-10-17 10:12:34,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:12:35,010 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:12:35,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35 WrapperNode [2022-10-17 10:12:35,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:12:35,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:12:35,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:12:35,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:12:35,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (1/1) ... [2022-10-17 10:12:35,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (1/1) ... [2022-10-17 10:12:35,065 INFO L138 Inliner]: procedures = 19, calls = 79, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 254 [2022-10-17 10:12:35,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:12:35,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:12:35,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:12:35,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:12:35,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (1/1) ... [2022-10-17 10:12:35,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (1/1) ... [2022-10-17 10:12:35,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (1/1) ... [2022-10-17 10:12:35,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (1/1) ... [2022-10-17 10:12:35,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (1/1) ... [2022-10-17 10:12:35,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (1/1) ... [2022-10-17 10:12:35,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (1/1) ... [2022-10-17 10:12:35,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (1/1) ... [2022-10-17 10:12:35,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:12:35,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:12:35,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:12:35,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:12:35,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (1/1) ... [2022-10-17 10:12:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:12:35,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:12:35,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:12:35,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:12:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:12:35,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:12:35,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:12:35,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 10:12:35,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:12:35,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 10:12:35,266 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-10-17 10:12:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-10-17 10:12:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:12:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:12:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:12:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-10-17 10:12:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-10-17 10:12:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-10-17 10:12:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:12:35,378 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:12:35,380 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:12:36,045 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:12:36,054 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:12:36,057 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-10-17 10:12:36,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:12:36 BoogieIcfgContainer [2022-10-17 10:12:36,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:12:36,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:12:36,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:12:36,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:12:36,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:12:34" (1/3) ... [2022-10-17 10:12:36,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@837811b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:12:36, skipping insertion in model container [2022-10-17 10:12:36,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:35" (2/3) ... [2022-10-17 10:12:36,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@837811b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:12:36, skipping insertion in model container [2022-10-17 10:12:36,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:12:36" (3/3) ... [2022-10-17 10:12:36,071 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0661b.c [2022-10-17 10:12:36,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:12:36,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:12:36,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:12:36,147 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@73cc984f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:12:36,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:12:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 97 states have (on average 1.731958762886598) internal successors, (168), 98 states have internal predecessors, (168), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:12:36,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:12:36,160 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:36,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:36,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:36,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:36,166 INFO L85 PathProgramCache]: Analyzing trace with hash -498009200, now seen corresponding path program 1 times [2022-10-17 10:12:36,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:36,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218649072] [2022-10-17 10:12:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:36,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:36,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:36,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218649072] [2022-10-17 10:12:36,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218649072] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:36,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:36,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:12:36,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144695088] [2022-10-17 10:12:36,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:36,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:12:36,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:36,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:12:36,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:12:36,444 INFO L87 Difference]: Start difference. First operand has 105 states, 97 states have (on average 1.731958762886598) internal successors, (168), 98 states have internal predecessors, (168), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:36,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:36,506 INFO L93 Difference]: Finished difference Result 207 states and 352 transitions. [2022-10-17 10:12:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:12:36,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-17 10:12:36,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:36,515 INFO L225 Difference]: With dead ends: 207 [2022-10-17 10:12:36,515 INFO L226 Difference]: Without dead ends: 101 [2022-10-17 10:12:36,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:12:36,521 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:36,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:12:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-10-17 10:12:36,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-10-17 10:12:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 94 states have (on average 1.5106382978723405) internal successors, (142), 94 states have internal predecessors, (142), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:12:36,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 150 transitions. [2022-10-17 10:12:36,566 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 150 transitions. Word has length 11 [2022-10-17 10:12:36,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:36,566 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 150 transitions. [2022-10-17 10:12:36,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 150 transitions. [2022-10-17 10:12:36,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 10:12:36,568 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:36,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:36,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:12:36,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:36,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:36,570 INFO L85 PathProgramCache]: Analyzing trace with hash -148901144, now seen corresponding path program 1 times [2022-10-17 10:12:36,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:36,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642850328] [2022-10-17 10:12:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:36,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:36,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:36,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642850328] [2022-10-17 10:12:36,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642850328] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:36,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:36,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:12:36,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385108385] [2022-10-17 10:12:36,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:36,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:12:36,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:36,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:12:36,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:12:36,809 INFO L87 Difference]: Start difference. First operand 101 states and 150 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:36,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:36,908 INFO L93 Difference]: Finished difference Result 214 states and 319 transitions. [2022-10-17 10:12:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:12:36,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-17 10:12:36,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:36,917 INFO L225 Difference]: With dead ends: 214 [2022-10-17 10:12:36,919 INFO L226 Difference]: Without dead ends: 143 [2022-10-17 10:12:36,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:12:36,926 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 80 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:36,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 318 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:12:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-10-17 10:12:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 128. [2022-10-17 10:12:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 121 states have (on average 1.5454545454545454) internal successors, (187), 121 states have internal predecessors, (187), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:12:36,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 195 transitions. [2022-10-17 10:12:36,958 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 195 transitions. Word has length 13 [2022-10-17 10:12:36,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:36,960 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 195 transitions. [2022-10-17 10:12:36,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:36,961 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 195 transitions. [2022-10-17 10:12:36,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:12:36,967 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:36,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:36,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:12:36,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1534369806, now seen corresponding path program 1 times [2022-10-17 10:12:36,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:36,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545006823] [2022-10-17 10:12:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:36,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:12:37,060 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:12:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:12:37,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:12:37,147 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:12:37,149 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:12:37,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:12:37,156 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-17 10:12:37,160 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:12:37,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:12:37 BoogieIcfgContainer [2022-10-17 10:12:37,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:12:37,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:12:37,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:12:37,229 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:12:37,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:12:36" (3/4) ... [2022-10-17 10:12:37,232 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:12:37,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:12:37,237 INFO L158 Benchmark]: Toolchain (without parser) took 2581.56ms. Allocated memory is still 127.9MB. Free memory was 90.7MB in the beginning and 61.9MB in the end (delta: 28.8MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2022-10-17 10:12:37,238 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:12:37,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.60ms. Allocated memory is still 127.9MB. Free memory was 90.5MB in the beginning and 99.4MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:12:37,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.04ms. Allocated memory is still 127.9MB. Free memory was 99.4MB in the beginning and 96.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:12:37,249 INFO L158 Benchmark]: Boogie Preprocessor took 104.68ms. Allocated memory is still 127.9MB. Free memory was 96.7MB in the beginning and 94.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:12:37,249 INFO L158 Benchmark]: RCFGBuilder took 885.57ms. Allocated memory is still 127.9MB. Free memory was 94.1MB in the beginning and 67.4MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-10-17 10:12:37,250 INFO L158 Benchmark]: TraceAbstraction took 1164.21ms. Allocated memory is still 127.9MB. Free memory was 66.8MB in the beginning and 61.9MB in the end (delta: 4.9MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-10-17 10:12:37,250 INFO L158 Benchmark]: Witness Printer took 7.33ms. Allocated memory is still 127.9MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:12:37,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 353.60ms. Allocated memory is still 127.9MB. Free memory was 90.5MB in the beginning and 99.4MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.04ms. Allocated memory is still 127.9MB. Free memory was 99.4MB in the beginning and 96.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 104.68ms. Allocated memory is still 127.9MB. Free memory was 96.7MB in the beginning and 94.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 885.57ms. Allocated memory is still 127.9MB. Free memory was 94.1MB in the beginning and 67.4MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1164.21ms. Allocated memory is still 127.9MB. Free memory was 66.8MB in the beginning and 61.9MB in the end (delta: 4.9MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Witness Printer took 7.33ms. Allocated memory is still 127.9MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 233]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 232, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L218] float x = __VERIFIER_nondet_float(); [L219] float y = 0.0f; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, y=0, zero_atan2=0] [L226] COND TRUE x > 0.0f [L229] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; VAL [\old(x)=1000000000000000000000000000002, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000002, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=2147483647, ix=2147483646, ix = hx & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000002, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=2147483647, hy=0, ix=2147483646, ix = hx & 0x7fffffff=2147483647, iy=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; VAL [\old(x)=1000000000000000000000000000002, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=2147483647, hy=0, ix=2147483646, ix = hx & 0x7fffffff=2147483647, iy=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] [L229] RET, EXPR __ieee754_atan2f(y, x) [L229] float res = __ieee754_atan2f(y, x); [L232] COND TRUE res != 0.0f VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, ix = hx & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] [L233] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, ix = hx & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 82 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 473 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 158 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 315 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=2, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-17 10:12:37,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0661b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb7f3afec9a7b0bf288c62eb95c6c2b13307d1b9b48696daca584c7566ec9aef --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:12:39,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:12:39,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:12:39,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:12:39,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:12:39,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:12:39,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:12:39,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:12:39,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:12:39,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:12:39,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:12:39,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:12:39,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:12:39,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:12:39,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:12:39,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:12:39,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:12:39,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:12:39,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:12:39,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:12:39,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:12:39,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:12:39,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:12:39,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:12:39,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:12:39,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:12:39,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:12:39,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:12:39,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:12:39,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:12:39,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:12:39,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:12:39,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:12:39,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:12:39,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:12:39,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:12:39,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:12:39,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:12:39,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:12:39,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:12:39,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:12:39,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-10-17 10:12:39,784 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:12:39,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:12:39,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:12:39,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:12:39,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:12:39,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:12:39,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:12:39,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:12:39,788 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:12:39,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:12:39,788 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:12:39,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:12:39,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:12:39,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:12:39,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:12:39,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:12:39,790 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:12:39,791 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:12:39,791 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:12:39,791 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:12:39,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:12:39,792 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:12:39,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:12:39,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:12:39,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:12:39,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:12:39,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:12:39,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:12:39,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:12:39,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:12:39,794 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:12:39,795 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:12:39,795 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:12:39,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:12:39,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:12:39,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:12:39,796 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb7f3afec9a7b0bf288c62eb95c6c2b13307d1b9b48696daca584c7566ec9aef [2022-10-17 10:12:40,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:12:40,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:12:40,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:12:40,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:12:40,191 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:12:40,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0661b.c [2022-10-17 10:12:40,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/data/d78254cb3/5bbf26c83d6d48aba45ec80b2765c92d/FLAG085c997e9 [2022-10-17 10:12:40,875 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:12:40,876 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c [2022-10-17 10:12:40,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/data/d78254cb3/5bbf26c83d6d48aba45ec80b2765c92d/FLAG085c997e9 [2022-10-17 10:12:41,220 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/data/d78254cb3/5bbf26c83d6d48aba45ec80b2765c92d [2022-10-17 10:12:41,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:12:41,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:12:41,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:12:41,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:12:41,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:12:41,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f32aabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41, skipping insertion in model container [2022-10-17 10:12:41,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:12:41,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:12:41,511 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c[5269,5282] [2022-10-17 10:12:41,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:12:41,562 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:12:41,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c[5269,5282] [2022-10-17 10:12:41,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:12:41,694 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:12:41,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41 WrapperNode [2022-10-17 10:12:41,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:12:41,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:12:41,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:12:41,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:12:41,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,755 INFO L138 Inliner]: procedures = 22, calls = 79, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 219 [2022-10-17 10:12:41,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:12:41,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:12:41,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:12:41,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:12:41,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,831 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:12:41,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:12:41,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:12:41,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:12:41,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (1/1) ... [2022-10-17 10:12:41,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:12:41,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:12:41,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:12:41,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:12:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:12:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-10-17 10:12:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:12:41,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:12:41,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-10-17 10:12:41,916 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-10-17 10:12:41,916 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-10-17 10:12:41,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:12:41,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:12:41,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:12:41,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-10-17 10:12:41,917 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-10-17 10:12:41,918 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-10-17 10:12:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:12:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:12:42,014 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:12:42,016 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:12:52,222 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:12:52,238 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:12:52,238 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-10-17 10:12:52,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:12:52 BoogieIcfgContainer [2022-10-17 10:12:52,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:12:52,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:12:52,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:12:52,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:12:52,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:12:41" (1/3) ... [2022-10-17 10:12:52,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c58276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:12:52, skipping insertion in model container [2022-10-17 10:12:52,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:41" (2/3) ... [2022-10-17 10:12:52,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c58276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:12:52, skipping insertion in model container [2022-10-17 10:12:52,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:12:52" (3/3) ... [2022-10-17 10:12:52,257 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0661b.c [2022-10-17 10:12:52,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:12:52,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:12:52,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:12:52,338 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@ab5c798, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:12:52,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:12:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 84 states have (on average 1.6547619047619047) internal successors, (139), 85 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:12:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:12:52,353 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:52,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:52,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:52,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:52,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1457381495, now seen corresponding path program 1 times [2022-10-17 10:12:52,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:12:52,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726985572] [2022-10-17 10:12:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:52,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:12:52,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:12:52,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:12:52,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:12:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:53,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:12:53,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:12:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:53,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:12:53,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:12:53,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726985572] [2022-10-17 10:12:53,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726985572] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:53,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:53,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:12:53,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374883958] [2022-10-17 10:12:53,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:53,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:12:53,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:12:53,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:12:53,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:12:53,451 INFO L87 Difference]: Start difference. First operand has 92 states, 84 states have (on average 1.6547619047619047) internal successors, (139), 85 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:53,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:53,490 INFO L93 Difference]: Finished difference Result 181 states and 294 transitions. [2022-10-17 10:12:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:12:53,492 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-17 10:12:53,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:53,502 INFO L225 Difference]: With dead ends: 181 [2022-10-17 10:12:53,503 INFO L226 Difference]: Without dead ends: 88 [2022-10-17 10:12:53,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:12:53,511 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:53,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:12:53,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-10-17 10:12:53,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-10-17 10:12:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.4691358024691359) internal successors, (119), 81 states have internal predecessors, (119), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:12:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 127 transitions. [2022-10-17 10:12:53,559 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 127 transitions. Word has length 11 [2022-10-17 10:12:53,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:53,560 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 127 transitions. [2022-10-17 10:12:53,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:53,575 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 127 transitions. [2022-10-17 10:12:53,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 10:12:53,576 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:53,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:53,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:12:53,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:12:53,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:53,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:53,778 INFO L85 PathProgramCache]: Analyzing trace with hash 413175488, now seen corresponding path program 1 times [2022-10-17 10:12:53,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:12:53,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491800406] [2022-10-17 10:12:53,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:53,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:12:53,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:12:53,782 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:12:53,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:12:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:54,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 10:12:54,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:12:54,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:12:55,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-10-17 10:12:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:55,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:12:55,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:12:55,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491800406] [2022-10-17 10:12:55,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491800406] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:55,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:55,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:12:55,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664159234] [2022-10-17 10:12:55,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:55,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:12:55,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:12:55,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:12:55,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:12:55,768 INFO L87 Difference]: Start difference. First operand 88 states and 127 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:57,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:12:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:57,093 INFO L93 Difference]: Finished difference Result 92 states and 130 transitions. [2022-10-17 10:12:57,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:12:57,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-17 10:12:57,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:57,126 INFO L225 Difference]: With dead ends: 92 [2022-10-17 10:12:57,126 INFO L226 Difference]: Without dead ends: 88 [2022-10-17 10:12:57,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:12:57,129 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 5 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:57,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 777 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 66 Unchecked, 1.1s Time] [2022-10-17 10:12:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-10-17 10:12:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-10-17 10:12:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.4567901234567902) internal successors, (118), 81 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:12:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 126 transitions. [2022-10-17 10:12:57,144 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 126 transitions. Word has length 13 [2022-10-17 10:12:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:57,144 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 126 transitions. [2022-10-17 10:12:57,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 126 transitions. [2022-10-17 10:12:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:12:57,146 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:57,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:57,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:12:57,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:12:57,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:57,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2003357637, now seen corresponding path program 1 times [2022-10-17 10:12:57,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:12:57,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685393382] [2022-10-17 10:12:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:57,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:12:57,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:12:57,367 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:12:57,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:12:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:58,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:12:58,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:12:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:58,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:12:58,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:12:58,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685393382] [2022-10-17 10:12:58,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685393382] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:58,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:58,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:12:58,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492241662] [2022-10-17 10:12:58,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:58,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:12:58,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:12:58,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:12:58,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:12:58,737 INFO L87 Difference]: Start difference. First operand 88 states and 126 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:00,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:13:00,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:00,531 INFO L93 Difference]: Finished difference Result 160 states and 228 transitions. [2022-10-17 10:13:00,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:13:00,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-17 10:13:00,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:00,567 INFO L225 Difference]: With dead ends: 160 [2022-10-17 10:13:00,567 INFO L226 Difference]: Without dead ends: 92 [2022-10-17 10:13:00,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:13:00,569 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 16 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:00,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 586 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 10 Unchecked, 1.6s Time] [2022-10-17 10:13:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-10-17 10:13:00,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2022-10-17 10:13:00,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.4444444444444444) internal successors, (117), 81 states have internal predecessors, (117), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:13:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 125 transitions. [2022-10-17 10:13:00,597 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 125 transitions. Word has length 18 [2022-10-17 10:13:00,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:00,598 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 125 transitions. [2022-10-17 10:13:00,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:00,598 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 125 transitions. [2022-10-17 10:13:00,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:13:00,599 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:00,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:00,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:00,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:13:00,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:00,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:00,802 INFO L85 PathProgramCache]: Analyzing trace with hash -106452547, now seen corresponding path program 1 times [2022-10-17 10:13:00,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:13:00,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100181832] [2022-10-17 10:13:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:00,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:13:00,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:13:00,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:13:00,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:13:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:01,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:13:01,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:02,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:13:02,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:13:02,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100181832] [2022-10-17 10:13:02,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100181832] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:02,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:02,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:13:02,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753378599] [2022-10-17 10:13:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:02,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:13:02,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:13:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:13:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:13:02,135 INFO L87 Difference]: Start difference. First operand 88 states and 125 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:04,787 INFO L93 Difference]: Finished difference Result 92 states and 128 transitions. [2022-10-17 10:13:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:13:04,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-17 10:13:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:04,790 INFO L225 Difference]: With dead ends: 92 [2022-10-17 10:13:04,790 INFO L226 Difference]: Without dead ends: 88 [2022-10-17 10:13:04,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:13:04,792 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 145 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:04,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 425 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-17 10:13:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-10-17 10:13:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-10-17 10:13:04,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 81 states have internal predecessors, (116), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:13:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 124 transitions. [2022-10-17 10:13:04,811 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 124 transitions. Word has length 18 [2022-10-17 10:13:04,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:04,811 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 124 transitions. [2022-10-17 10:13:04,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 124 transitions. [2022-10-17 10:13:04,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 10:13:04,813 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:04,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:04,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:05,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:13:05,039 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:05,040 INFO L85 PathProgramCache]: Analyzing trace with hash 992165108, now seen corresponding path program 1 times [2022-10-17 10:13:05,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:13:05,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62154871] [2022-10-17 10:13:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:05,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:13:05,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:13:05,042 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:13:05,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:13:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:06,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:13:06,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:06,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:13:06,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-10-17 10:13:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:07,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:13:07,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:13:07,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62154871] [2022-10-17 10:13:07,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62154871] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:07,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:07,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:13:07,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748797406] [2022-10-17 10:13:07,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:07,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:13:07,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:13:07,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:13:07,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:13:07,294 INFO L87 Difference]: Start difference. First operand 88 states and 124 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:09,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:13:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:09,830 INFO L93 Difference]: Finished difference Result 169 states and 236 transitions. [2022-10-17 10:13:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:13:09,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-10-17 10:13:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:09,880 INFO L225 Difference]: With dead ends: 169 [2022-10-17 10:13:09,880 INFO L226 Difference]: Without dead ends: 96 [2022-10-17 10:13:09,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:13:09,882 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 14 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:09,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 756 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 42 Unchecked, 2.2s Time] [2022-10-17 10:13:09,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-17 10:13:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2022-10-17 10:13:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 81 states have internal predecessors, (115), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:13:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2022-10-17 10:13:09,896 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 19 [2022-10-17 10:13:09,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:09,897 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2022-10-17 10:13:09,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2022-10-17 10:13:09,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 10:13:09,898 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:09,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:09,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:10,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:13:10,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:10,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1527794826, now seen corresponding path program 1 times [2022-10-17 10:13:10,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:13:10,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600098588] [2022-10-17 10:13:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:10,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:13:10,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:13:10,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:13:10,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 10:13:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:11,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 10:13:11,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:11,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:13:11,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-10-17 10:13:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:11,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:13:11,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:13:11,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600098588] [2022-10-17 10:13:11,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600098588] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:11,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:11,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:13:11,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36587353] [2022-10-17 10:13:11,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:11,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:13:11,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:13:11,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:13:11,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:13:11,960 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:12,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:12,334 INFO L93 Difference]: Finished difference Result 122 states and 166 transitions. [2022-10-17 10:13:12,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:13:12,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-10-17 10:13:12,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:12,336 INFO L225 Difference]: With dead ends: 122 [2022-10-17 10:13:12,336 INFO L226 Difference]: Without dead ends: 47 [2022-10-17 10:13:12,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:13:12,338 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:12,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 335 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-10-17 10:13:12,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-17 10:13:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-10-17 10:13:12,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:13:12,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2022-10-17 10:13:12,346 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 19 [2022-10-17 10:13:12,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:12,347 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2022-10-17 10:13:12,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2022-10-17 10:13:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 10:13:12,349 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:12,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:12,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:12,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:13:12,574 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1298567107, now seen corresponding path program 1 times [2022-10-17 10:13:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:13:12,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713495787] [2022-10-17 10:13:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:12,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:13:12,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:13:12,576 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:13:12,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cfa576-56a0-4bec-b8c5-3958350f6b8a/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process